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High Rainfall Forecast for Onitsha
An automatic weather alert indicates high precipitation levels in Onitsha on September 21, 2026. Forecast data shows rainfall exceeding the established threshold.
Precipitation levels in Onitsha are projected to reach 36.5 millimeters according to forecast data from wweather1.com. This measurement exceeds the designated high severity threshold of 30 millimeters.
The weather event is associated with forecasted rain conditions beginning on September 21, 2026. Automatic monitoring systems registered the metric crossing the warning limit.
Residents and local authorities in the affected area are advised to monitor ongoing weather conditions as the forecasted precipitation develops.
Why it is dangerous and what to do
⚠️ Safety
• Monitor local weather updates and forecasts.
• Exercise caution when traveling on wet roads.
• Ensure proper drainage around residential properties.
📊 The numbers, from wweather1 data
Onitsha: now +23°, Drizzle.
That is 1° below the September climate norm.
The record for this date is +31° (2023).
Three-day forecast: 21 September: +28°/+23° · 22 September: +29°/+24° · 23 September: +30°/+24°
The figures are computed automatically from the Open-Meteo/ERA5 archive — no eyeball estimates. 🌍 Weather in nearby cities
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📰 Data source: wweather1. Forecast and analysis — wweather1, based on Open-Meteo / met.no data.